EP1347643A1 - Système de distribution de programmes de télévision et pour la mise en oeuvre de services de télécommunication - Google Patents

Système de distribution de programmes de télévision et pour la mise en oeuvre de services de télécommunication Download PDF

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Publication number
EP1347643A1
EP1347643A1 EP02360097A EP02360097A EP1347643A1 EP 1347643 A1 EP1347643 A1 EP 1347643A1 EP 02360097 A EP02360097 A EP 02360097A EP 02360097 A EP02360097 A EP 02360097A EP 1347643 A1 EP1347643 A1 EP 1347643A1
Authority
EP
European Patent Office
Prior art keywords
distribution system
unit
cds
connection
central unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP02360097A
Other languages
German (de)
English (en)
Inventor
Dietrich Böttle
Heinz-Georg Krimmel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Priority to EP02360097A priority Critical patent/EP1347643A1/fr
Priority to US10/384,644 priority patent/US20030179286A1/en
Publication of EP1347643A1 publication Critical patent/EP1347643A1/fr
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications

Definitions

  • the invention relates to a system for distributing television programs according to the preamble of claim 1, a central processing unit a distribution system according to the preamble of the claim 2, a communication terminal according to the preamble of the claim 6, a plug-in card for a computer according to the preamble of claim 7 and a connection unit according to the preamble of claim 8.
  • the invention further relates to a system according to the preamble of claim 9 and a central unit a distribution system according to the preamble of claim 10.
  • the cable distribution system is in the simplest case a coaxial cable with a antenna socket at the end. This cable can be looped through other antenna sockets beforehand. This cable can also be used for stub lines with additional antenna sockets branch. At the central unit too several such cables are already connected in parallel.
  • the central unit is a junction box for connection to an external terrestrial antenna.
  • an external terrestrial antenna usually several external antennas are connected here for reception serve all locally accessible television programs. Is common also a satellite antenna device connected.
  • the distribution system is the most extensive stage of expansion a large community antenna system, the total one represents a large tree network.
  • the core of such a large community antenna system (the "root” of the "tree") is then one Head station with antennas for both terrestrial reception Television programs as well as for satellite broadcasts TV programs is equipped and maybe also TV programs distributed over cable for distribution.
  • frequency conversion is also carried out individual programs to make optimal use of the distribution system and yet rule out mutual interference.
  • Out Capacity reasons not for fundamental reasons in this case, however, the invention rather on individual branches and do not apply to the entire tree.
  • As a central unit serves in this case either, with only a small load, the Head station itself or the different house or Floor distributor. Here you can also transfer between several Owners or users of the entire system. On such a point is conventionally also referred to as a transfer point.
  • the invention has for its object cable distribution systems To be supplemented so that it can also be used for bidirectional communication services can be used with.
  • this object is achieved by a system according to the teaching of claim 1, a central unit of a distribution system according to the teaching of claim 2, a communication terminal according to the teaching of claim 6, a plug-in card for a computer according to the teaching of claim 7 and a connection unit according to the teaching of claim 8.
  • a distribution system house distribution system, Community antenna system
  • a connection unit of a cellular radio communication service connected.
  • communication services are at a lower level Cable transmission while in an overlying level Radio transmission with point-to-multipoint property is present.
  • Figure 1 shows a public communication network CN, a Radio base station RBS, two radio network termination units RT, two Central units CU, the premises UP of two consumers, and a television head-end station TVHE with a satellite antenna system SA.
  • the central units CU each have a network termination unit NT and a crossover FS.
  • the premises UP of a consumer each have an unspecified Junction box and a smaller cable network on which Connections for a television terminal TV, a computer PC and a telephone Tel are shown.
  • network level 4 The area between the end participants and the Central unit, is usually called network level 4, NL4, designated.
  • At least network level 4, NL4 is currently using coaxial cables designed as a cable distribution system. It is accepted and for the present invention also assumes that this will continue so is. The transition to fiber optic networks in this area should not be excluded.
  • Network level 4, NL4, is currently typically in the hands of smaller operators such as Homeowner communities, settlement societies or local Craft shops. Such operators often have their own Antenna system, which they then use as a TV HEAD station. In these cases, network level 3, NL3 is then omitted. However, these operators usually do not have direct access to public communication networks.
  • the radio base station RBS is public Communication network CN connected.
  • the central unit CU is assigned to a radio network termination unit RT that the network termination unit NT connected to this central unit CU is.
  • the radio base station is the radio base station RBS a cell of a cellular radio communication service intended. It is therefore intended that the resources this radio base station not this one radio network termination unit RT are permanently assigned, but as required be allocated according to a specified protocol.
  • LMDS Local Multipoint Distribution Service
  • This service is for example described in "LMDS Systems and their Application” by Agne Nordbotten in IEEE Communications Magazine, June 2000, on pages 150-154.
  • LMDS Systems and their Application is specially tailored to broadband House connections, i.e. at distances of up to a few kilometerss and stationary applications. It works in the frequency domain of about 30 GHz with a transmission capacity of about 30 Mbit / s. Basically, however, the others are mentioned Systems with certain restrictions can be used as well the use of systems that are still to be developed is also not excluded is.
  • the optical range can also be fundamentally as a "radio area" cannot be excluded, even if currently no optical point-to-multipoint systems are known.
  • the respective base station of such a system is from the present invention not affected.
  • FIG. 2 This shows a section of Figure 1 with more details and partly also additional facilities.
  • FIG. 2 shows a cable distribution system CDS, on the one hand with the central unit CU and on the other hand with the premises UP of a consumer is connected.
  • the cable distribution system CDS is simply a branch of one of the central units CU coming line shown.
  • General is this is a network with a tree structure.
  • the central unit CU has the network termination unit in this example NT, a format converter FC, the crossover FS and an optional signal path with a filter unit FU on.
  • Functional but not constructive part of the Central unit CU is the radio termination unit RT.
  • This radio termination unit RT in turn forms a functional unit with the network termination unit NT, which here as the termination unit TU referred to as.
  • the television terminal TV remains from the present invention unaffected. Although it may be the signals of the communication service received in one of its frequency channels and in can implement the base frequency; it gets these signals though cannot demodulate.
  • connection unit AU In order to understand the function of the connection unit AU, must now have a complete signal path of the signals of a communication service to be viewed as. This is primarily the signal path from the public communication network CN to the consumer (end user) considered. The opposite way goes completely analog, at most the capacities used for the two routes are differently.
  • the radio termination unit RT is one with a Antenna connected and usually also structurally with this unified input amplifier with frequency conversion.
  • the intermediate frequency which is implemented is in the range of about 1 GHz.
  • the subsequent network termination unit NT on the one hand in the baseband range and on the other hand turns the Regulate the protocol used to get back to its output the bundle of data streams, for example in the known Output Ethernet format.
  • This signal can be done in the simplest Case as a baseband signal via the cable distribution system Connection unit AU and to the other connected devices be performed.
  • the crossover FS At the entry point of the television program signals, here the crossover FS, it must then be ensured that the data streams are not also fed back there. Therefor can in the simplest case a high-pass filter in the direction of Network level 3, NL3, are sufficient.
  • a simple connection of the two Signal paths are not sufficient at this point.
  • the one required here Coupling unit must definitely the two of the Decouple the cable distribution system from the technological connections.
  • connection unit AU this bundle of data streams in the protocol of a to implement wired communication service.
  • this connection unit AU as usual in such cases, have two S-zero interfaces.
  • the connection unit AU could then also become a domestic one Switchboard may be expanded, which may be several Connections for analog telephone or fax machines, for example or to connect a DECT base station. A such a base station could also be part of the connection unit Be AU yourself. Also a USB port for connecting a computer or a "Bluetooth" interface could be available here his.
  • connection unit AU is on another End of the cable branch in the premises UP this Consumer connected a communication terminal TE.
  • This Communication terminal TE is a simple version of a Combination of a connection unit and one connected to it Terminal.
  • a format converter FC ' but also a filter unit FU 'shown. Since here only band-limited signals the frequency must be implemented, the required Filter function definitely ensured in some way his.
  • the central unit CU drawn with a filter unit FU.
  • This can be used if the central unit, which is the starting point of the tree-like structured cable distribution system must lie for the reception of the signals coming from the radio base station is unsuitable lies, for example, because the television program signals come from a cable television system buried in the ground. In this case, it is advisable to use the CDS cable distribution system Connection between the radio termination unit RT and the central unit CU to use. This assumes that one is still sufficient wide frequency range is free and in the central unit CU and possibly also at the connection to the radio termination unit RT separated with a filter unit FU becomes.
  • Any facility that is capable of offering communication services can inevitably also offer such services that are directed in one direction only and in which the opposite direction is only used for control purposes.
  • the television distribution system can omitted. The corresponding, only for the correct cooperation between the television distribution system and the facilities of communication services required components and assemblies.
  • the central unit CU then essentially consists for example from an LMDS connection unit and a cable modem connection

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
EP02360097A 2002-03-21 2002-03-21 Système de distribution de programmes de télévision et pour la mise en oeuvre de services de télécommunication Ceased EP1347643A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02360097A EP1347643A1 (fr) 2002-03-21 2002-03-21 Système de distribution de programmes de télévision et pour la mise en oeuvre de services de télécommunication
US10/384,644 US20030179286A1 (en) 2002-03-21 2003-03-11 System for distributing television programmes and for carrying out communications services, as well as central unit of a distribution system, communications terminal, plug-in board for a computer and connection unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02360097A EP1347643A1 (fr) 2002-03-21 2002-03-21 Système de distribution de programmes de télévision et pour la mise en oeuvre de services de télécommunication

Publications (1)

Publication Number Publication Date
EP1347643A1 true EP1347643A1 (fr) 2003-09-24

Family

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Family Applications (1)

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EP02360097A Ceased EP1347643A1 (fr) 2002-03-21 2002-03-21 Système de distribution de programmes de télévision et pour la mise en oeuvre de services de télécommunication

Country Status (2)

Country Link
US (1) US20030179286A1 (fr)
EP (1) EP1347643A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009033907A1 (de) * 2009-07-20 2011-02-03 Skytronic Gmbh Rf Communications & Technologies Anlage zum Empfangen von Fernseh- oder Radiosignalen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2440383B (en) * 2006-07-21 2011-05-04 Vodafone Plc Residential repeaters

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996028904A1 (fr) * 1995-03-16 1996-09-19 Bell Atlantic Network Services, Inc. Diffusion simultanee de programmes video pour des services diffuses et interactifs
WO2000003542A1 (fr) * 1998-07-13 2000-01-20 Uni.Com S.P.A. Systeme optimise de repartition des services de telecommunication et de television a partir d'un noeud peripherique vers des terminaux d'utilisateur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5177604A (en) * 1986-05-14 1993-01-05 Radio Telcom & Technology, Inc. Interactive television and data transmission system
FI107419B (fi) * 1995-01-26 2001-07-31 Nokia Networks Oy Solukkoradiojärjestelmä, toistin ja tukiasema
US6167271A (en) * 1997-05-05 2000-12-26 Northern Telecom Limited Interface between cellular and wired networks with enhanced subscriber mobility
US20050026561A1 (en) * 2001-04-13 2005-02-03 Dan Shklarsky Third generation (3g) mobile service over catv network
DK1384333T3 (da) * 2001-05-02 2009-03-09 Passover Inc Cellulær flerbåndstjeneste over kabel-tv-netværk

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996028904A1 (fr) * 1995-03-16 1996-09-19 Bell Atlantic Network Services, Inc. Diffusion simultanee de programmes video pour des services diffuses et interactifs
WO2000003542A1 (fr) * 1998-07-13 2000-01-20 Uni.Com S.P.A. Systeme optimise de repartition des services de telecommunication et de television a partir d'un noeud peripherique vers des terminaux d'utilisateur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009033907A1 (de) * 2009-07-20 2011-02-03 Skytronic Gmbh Rf Communications & Technologies Anlage zum Empfangen von Fernseh- oder Radiosignalen

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Publication number Publication date
US20030179286A1 (en) 2003-09-25

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